micro:bit

The micro:bit is a microcontroller by the BBC.

specs
magnetometer	LSM303AGR
display	5×5 LED matrix (red)
processor	Nordic nRF52833, 64 MHz ARM Cortex-M4
flash	512 kB
RAM	128 kB
accelerometer	LSM303AGR

Bluetooth services reference
service	item	UUID
UART	service	`6E400001-B5A3-F393-E0A9-E50E24DCCA9E`
	UART RX	`6E400002-B5A3-F393-E0A9-E50E24DCCA9E`
	UART TX	`6E400003-B5A3-F393-E0A9-E50E24DCCA9E`
accelerometer	service	`E95D0753-251D-470A-A062-FA1922DFA9A8`
	data	`E95DCA4B-251D-470A-A062-FA1922DFA9A8`
	period	`E95DFB24-251D-470A-A062-FA1922DFA9A8`
button	service	`E95D9882-251D-470A-A062-FA1922DFA9A8`
	button 1	`E95DDA90-251D-470A-A062-FA1922DFA9A8`
	button 2	`E95DDA91-251D-470A-A062-FA1922DFA9A8`
IO pin	service	`E95D127B-251D-470A-A062-FA1922DFA9A8`
	pin data	`E95D8D00-251D-470A-A062-FA1922DFA9A8`
	pin AD config	`E95D5899-251D-470A-A062-FA1922DFA9A8`
	pin IO config	`E95DB9FE-251D-470A-A062-FA1922DFA9A8`
LED	service	`E95DD91D-251D-470A-A062-FA1922DFA9A8`
	LED matrix state	`E95D7B77-251D-470A-A062-FA1922DFA9A8`
	LED text	`E95D93EE-251D-470A-A062-FA1922DFA9A8`
	scrolling delay	`E95D0D2D-251D-470A-A062-FA1922DFA9A8`
magnetometer	service	`E95DF2D8-251D-470A-A062-FA1922DFA9A8`
	data	`E95DFB11-251D-470A-A062-FA1922DFA9A8`
	period	`E95D386C-251D-470A-A062-FA1922DFA9A8`
	bearing	`E95D9715-251D-470A-A062-FA1922DFA9A8`
temperature	service	`E95D6100-251D-470A-A062-FA1922DFA9A8`
temperature	temperature	`E95D9250-251D-470A-A062-FA1922DFA9A8`

resources

micro:bit runtime — Lancaster University